Saint Germain et al. (2007) modeled the presence absence of a saprophytic wood boring beetle (Anthophylax attenuatus) as a function of the wood density of twenty-four decaying aspen trees (Populus tremuloides) in Western Quebec Canada.
data(beetle)
A data frame with 24 observations on the following 4 variables.
Snag
Snag identifier
Yrs.since.death
The number of years since death, determined using dendrochronological methods.
Wood.density
The density of the decaying wood (dry weight/volume) in units of g cm\(-3\).
ANAT
Beetle presence/absence (1/0)